机械5

摇杆机械加工工艺规程及钻φ20孔夹具设计 摘要 本次设计主要确定摇杆加工的工艺过程，以及夹具的设计。在制定工艺过程中，要确定各工序的安装工位和该工序需要的工步，加工该工序的机车及机床的进给量，切削深度，主轴转速和切削速度，该工序的夹具。通过老师指导，查阅书籍，先初步确定摇杆加工的工艺过程，夹具的定位方案，夹紧力的计算。最后，撰写说明书，绘制装配图及夹具体零件图。 关键词：工序，工艺，工步，定位方案，夹紧力 Abstract This desig
n mai
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nes the processes of the rocker, the desig
n of the fixture. I
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nfirm every erector locatio
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nd worker step that process
need this of process to wa
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nd the e
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ng the givi
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nt of the lathe, cut depth, the rotatio
nal speed of the mai
n shaft a
nd speed of the cutti
ng ,the jig of this process. Through the guida
nce of the teacher, co
nsult the books, the first prelimi
nary is to co
nfirm the rocker process, the positio
ni
ng scheme of the fixture, calculati
ng the clamp stre
ngth. Fi
nally, writi
ng the ma
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ng the assembly drawi
ng a
nd the fixture co
nfiguratio
n. Keywords: The process, tech
nology, worki
ng step, positio
ni
ng scheme, clampi
ng stre
ngth 目录 1零件的工艺分析及生产类型的确定1 1.1零件的用途1 1.2零件的工艺分析1 1.3摇杆主要加工部位技术要求1 1.4确定生产类型2 2确定毛坯、绘制毛坯简图2 2.1确定毛坯种类2 2.2确定毛坯的尺寸公差和机械加工余量2 3工艺过程设计3 3.1定位基准的选择3 3.2零件表面加工方法的确定3 3.3制定工艺路线3 3.4确定切屑用量及基本时间4 3.4.1切削用量的计算4 3.4.2时间定额的计算5 4夹具设计7 4.1问题的提出7 4.2确定夹具的结构方案7 4.2.1确定定位元件7 4.2.2定位误差分析8 4.2.3确定导向装置8 4.2.4确定夹紧机构8 4.3夹紧力的计算8 5参考文献9